It is definitely an NTSC A2000, it says so on the label on the back. And it is definitely a PAL A520. I got it from a guy in Tennessee, USA, but it has German writing on the back and a 4.43mhz crystal.

I checked all the solder joints and they did look good. I was going to re-do them even still but I'm almost sure it's a PAL unit anyway.

So there is no chance to get color from this PAL A520 on my NTSC A2000 and television, right?